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LT3581EMSE-PBF Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LT3581EMSE-PBF
3.3A Boost/Inverting DC/DC Converter with Fault Protection
Linear Technology
LT3581EMSE-PBF Datasheet PDF : 36 Pages
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LT3581
BLOCK DIAGRAM
V
IN
C
IN
L1
R
FAULT
OPTIONAL
D1
M1
C
OUT1
R
GATE
C
OUT2
V
OUT
GATE
FAULT
SOFT-
START
V
C
933µA
22V
DIE TEMP MIN
165°C
V
IN
750mV
2.1V
50mV
+
–
1.8V
–
250k
+
SS
LDO
C
SS
STARTUP
AND FAULT
LOGIC
DRIVER
DISABLE
SHDN
+
1.33V
–
V
IN
1.215V
REFERENCE
UVLO
SW1
**
42V
MIN
SW2
SAMPLE MODE BLOCK
**
42V
MIN
1.17V
I
SW1
FB
1.9A
MIN
TD ~ 30ns
45mV
SW2
SAMPLE
VBE • 0.9
R
FB
COMPARATOR
–
AA33
+
SR1
DRIVER
R
Q
S
Q2
SW1
27mΩ
Q1
+
14.6k
A1
–
FB
∑
RAMP
GENERATOR
R
S
A4
20mΩ
GND
14.6k
+
A2
–
FREQUENCY
÷N
ADJUSTABLE
FOLDBACK
OSCILLATOR
SS
SYNC
BLOCK
V
C
R
C
C
C
SYNC
RT
CLKOUT
R
T
**SW OVERVOLTAGE PROTECTION IS NOT GUARANTEED TO PROTECT THE LT3581 DURING SW OVERVOLTAGE EVENTS
3581 BD
Figure 1. Block Diagram
3581fb
8
For more information
www.linear.com/LT3581
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